"Superman: The Animated Series" and the Timm Verse in general showed a significantly de-powered Superman who even got beat up and tossed around at times.

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Well even the Christopher Reeve Superman wasn't all-powerful. He was often shown struggling at different points-- whether trying to catch up with a missle, wincing at an explosion, or getting knocked around by light poles and sewer covers. Hell, after getting knocked senseless by that bus, even taking off seemed to require a bit of effort.

And yeah, he was able to turn the Earth backwards, but he was clearly straining and using every ounce of his power to do it.